The greatest thing we can do from a security perspective is to focus on life safety systems. Fire, access control, intrusion and school tracking systems have been a focus of mine for several years now.
Instructors who care about passing on the learning objectives to others, get addicted to light bulbs. When understand the "why" of something for the first time, you see the light bulb look on their face. To be able to see that and at the same time do something that can save lives with properly installed systems, that is why I teach.